|
gptkbp:instanceOf
|
gptkb:star
red supergiant
|
|
gptkbp:age
|
10 million years
|
|
gptkbp:apparentMagnitude
|
1.86
−0.67
|
|
gptkbp:BayerDesignation
|
gptkb:Eta_Ursae_Majoris
|
|
gptkbp:catalogueNumber
|
gptkb:BD+49_2137
gptkb:HD_120315
gptkb:HR_5185
gptkb:HIP_67239
gptkb:SAO_44913
|
|
gptkbp:colorIndexB-V
|
−0.19
−0.68
|
|
gptkbp:constellation
|
gptkb:Ursa_Major
|
|
gptkbp:culturalSignificance
|
one of the seven stars of the Big Dipper
|
|
gptkbp:declination
|
+49° 18′ 48″
|
|
gptkbp:diameter
|
3.4 solar radii
|
|
gptkbp:distanceFromEarth
|
104 light years
|
|
gptkbp:hasExoplanet
|
false
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
η Ursae Majoris
|
|
gptkbp:isEndStarOfBigDipperHandle
|
true
|
|
gptkbp:isSingleStar
|
true
|
|
gptkbp:luminosity
|
594 solar luminosities
|
|
gptkbp:mass
|
6.1 solar masses
|
|
gptkbp:metallicity
|
−0.08 [Fe/H]
|
|
gptkbp:otherName
|
gptkb:Benetnasch
gptkb:Alkaid
|
|
gptkbp:parallax
|
0.24 mas
31.38 mas
|
|
gptkbp:partOf
|
gptkb:Big_Dipper
|
|
gptkbp:properMotionRA
|
−121.17 mas/yr
−14.91 mas/yr
|
|
gptkbp:rightAscension
|
13h 47m 32.4s
|
|
gptkbp:rotationPeriod
|
150 km/s
|
|
gptkbp:spectralType
|
B3V
|
|
gptkbp:temperature
|
15,540 K
|
|
gptkbp:variableStar
|
false
|
|
gptkbp:visibleToNakedEye
|
true
|
|
gptkbp:bfsParent
|
gptkb:Alkaid
|
|
gptkbp:bfsLayer
|
7
|